ATPV 2.1.0

ATPV stands for Arc Thermal Performance Value.

SVSS stands for Small Vertical Strip Specimen, a type of test method.

ATPV measures the protective performance of flame-resistant clothing against arc flashes.

ATPV is determined through testing using the SVSS method and calculating the incident energy at which there is a 50% probability of the onset of a second-degree burn.

The ATPV value indicates the level of protection provided by the clothing, with higher values corresponding to greater protection.

ATPV levels may vary depending on the specific clothing item, but typically range from 8 cal/cm² to over 40 cal/cm².

ATPV should be used as a guideline to select clothing that provides sufficient protection based on the expected arc flash hazard.

While higher ATPV values generally indicate better protection, it is important to consider other factors such as comfort and mobility when selecting flame-resistant clothing.

No, ATPV focuses on the energy level at which a second-degree burn could occur and does not consider the duration of the exposure or other potential hazards.

No, in addition to ATPV, other factors like fabric type, garment construction, workplace conditions, and industry standards should be considered when selecting appropriate protective clothing.